Flotation equipment integrating quantitative chemical adding, reverse stirring and central pulp conditioning

Abstract

The invention belongs to the technical field of pulp conditioning and floating of coal slime, and particularly relates to flotation equipment integrating quantitative chemical adding, reverse stirring and central pulp conditioning. The flotation equipment at least comprises a flotation tank, stirring mechanisms and a quantitative chemical adding system; the stirring mechanisms are horizontally arranged inside the flotation tank in a paired mode, forward spinning impellers and reverse spinning impellers are arranged on the surfaces of drums, and second discharge ports are formed in the surfaces of the drums; material feed pipes are installed inside the drums, first discharge ports are formed in the lower sides of the material feed pipes, and flow separating blocks are uniformly arranged on the inner walls of the material feed pipes; the stirring mechanisms have the cutting, spraying, spinning-spraying and stirring effects and have the effect of mixing three phases four times; gaps are reserved between the drums and the material feed pipes, when the drums rotate at high speed, negative pressure is formed in the gaps, air is sucked, and air flow is cut and dispersed by the second discharge ports; the quantitative chemical adding system is arranged on a pipeline of an ore pulp inlet, and chemicals can be quantitatively added according to the flow of the ore pulp. The flotation equipment further comprises a circulatory foam scraping mechanism for scraping all foam on the tank surface. The flotation equipment has the advantage that ore pulp pretreatment equipment is not needed.

Description

technical field [0001] The invention belongs to the technical field of flotation for slurry adjustment of coal slime, and in particular relates to an integrated flotation device for quantitative dosing, reverse stirring and central slurry adjustment. Background technique [0002] With the shortage of coal resources in my country and the improvement of coal mining mechanization, the deterioration of coal geological conditions has led to a decrease in the grade of raw coal mined from underground mines. At present, most coal preparation plants adopt dense medium cyclone production process, which increases the amount of secondary slime produced in the washing process and increases the burden on the later stage of slime water treatment; in addition, the current Chinese coal market continues to decline, Under the increasingly difficult situation of on-site production environment, in order to change this status quo, try new technology and speed up the research and development of ne...

AI Technical Summary

Problems solved by technology

From the existing flotation equipment, mechanical agitation and jet flotation machines are used in most coal preparation plants, but both require pulp pretreatment devices and have their own advantages and disadvantages

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